Improvement in carriage-axles



' UNITED STATES PATENT OFFICE.

JOHN T. WILSON, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND COLEMAN, RAHM 8u OO., OF SAME PLACE.

`IMPROVEM ENT IN CARRIAGE=AXLES.

Specification forming part of Letters Patent No. 87,609, dated March 9, 1869.

To all whom it may concern.-

Beit known that I, J OHN T.W1LsoN, of Pittsburg, in the county of Allegheny' and State of Pennsylvania, have invented certainnew and useful Improvements in Carriage-Axles; and

I do hereby declare that the following is a full,

clear, and exact description of the same, reference being had tothe accompanying drawings,

making a part of this specification, in which- Figure 1 represents, in perspective, one end v of a carriage-axle, with lthe axle-box therein, as

i the drawings.

My invention relates to the arrangement and location ofthe oil or other lubricating reservoirs, in connection with the journals of the axle, and of the avenues leading therefrom to the journal, as will be explained.

To enable others skilled in the art to' make and use my invention, l will proceed to describe the same with reference to the drawings.

Arepresents one end of an iron carriageaxle, and B the axle or journal box thereof. In the axle A, and just in rear of the shoulder a, against which the box B ahnte, is formed a circular groove or recess, c, which, after being formed, maybe covered near the perimeter by a piece of thin metal or other suitable material, e, and the remainder ofthe groove or recess is filled by a sott metal, f, poured or otherwise secured therein, so as to form an oilchamber, into which a lubricating material can be placed through an opening from the exterior that is afterward stopped by a screwplug, t. From this oil-chamber a small hole,

m, extends to the journal, which hole leads into a slightlongitudinal groove, ,in the journal, and thus makes a passage for the lubricat- Fig. 3 represents a ing material to leak slowly through from the reservoir to the journal. rlhe endoof thejournal-box B may cover the exterior shell of the reservoir, and thus protect it from casualty. On the point ofthejournal is screwed a cap, C, which holds thebox (and wheel in the hub of which the box is held) to the journal or axle. In this cap thereis an oil-chamber, r, forcontaining oil or other Huid lubricating compound, access to said chamber to ll it bein ghad by means of a screw-plug, ys, that closes and discloses an opening therein. From the end of thejournal or axle which the cap C covers a small leakhole, t, is made, inclining slightly downward toward the under side ot' said journal, and

.thence is met by another opening or hole, u,

bored in from said under side to meet that, t, above described. Where the opening u meets the exterior ofthe journal there is a recess, fu, formed in the box or sleeve B, so that it will not preventthe material from entering between said journal and box or sleeve to oil their rubhing surfaces.

Having thus fully described my invention, what l claim therein as new, and desire to secure by Letters Patent, is

l. An oil-reservoir,c,constructedin theaxle A, and furnished with an accessible opening through which it 'mayv be supplied with a lubricating material, and openings for its transmission to and between the journal and box or sleeve, substantially as described.

2. In combination with the cap C, the oilchamber r, its inlet-supply opening, and channels in the axle A for furnishing the lubricating compound to the box and journal at or near the points thereof, substantially as described. Y

. JOHN T. WILSON.

g Witnesses:

A. B. SToUGHToN, EDMUND MASSON. 

